I just graduated do I still count as a teen?
Anyway, I was very involved with campus ministry, and was comissioned by the Assemblies of God to win converts on campus. We did the whole 'be cool reach the youth thing', but after two years I found that there were no genuine converts. I was left in charge of the program so I pulled the plug and decided to teach doctrine to any kids interested (this happened my senior year, I had discovered reformed theology my junior year).
Consequently everyone lost interest and quit

. During this time my church transfered from a weekly youth fun nite to a mentor program. That too failed after a year.
Contemporary evangelism and discipleship doesn't work. It draws a big crowd, but bears little fruit. Don't entertain or spoon feed kids. Get e'm in a class room and beat the truth into their heads. Then beat their parents for raising little heathens.